Difference between revisions of "Yeast-like fungi"

Revision as of 14:18, 29 April 2010

FUNGI

Implicated in cases of:
- Pyelonephritis, pneumonia, septicaemia and meningitis (humans)
- Mastitis and abortion in cattle
- Systemic infection of monkeys and dogs

Trichosporonosis beigelii
- Implicated in feline nasal granuloma, skin infections in horses and monkeys, mastitis in cattle and sheep and in feline bladder infections

@@ Line 19: / Line 19: @@
-==''Malassezia pachydermidis''==
+''[[Malassezia pachydermidis]]''
-[[Image:Malassezia pachydermidis.jpg|thumb|right|150px|''Malassezia pachydermidis'' - Copyright Professor Andrew N. Rycroft, BSc, PHD, C. Biol.F.I.Biol., FRCPath]]
-*Normally present in oily areas on the external [[Ear - Anatomy & Physiology|ear]] canal and [[Skin - Anatomy & Physiology|skin]] in dogs
-**Some strains have been recovered from the [[Ear - Anatomy & Physiology|ear]] canal of cats
-*Bottle-shaped, small budding cells, non-mycelial
-*Gram stain shows purple yeast cells with a very wide base
-*Grows on Sabouraud's Dextrose agar in 2 weeks of incubation at room temperature
-*Greenish discolouration on blood agar
-*Clinical disease may cause yeast to proliferate and cause infection
-*Grossly:
-**Regional lesions: muzzle, [[Ear - Anatomy & Physiology|ears]], interdigital, perianal
-**Or generalised disease
-**Erythematous, hyperpigmented, [[Skin Glossary - Pathology|lichenified]] and scaly lesions with alopecia
-*Microscopically:
-**[[Skin Glossary - Pathology|hyperkeratosis, parakeratosis]]
-**Spongiotic pustular dermatitis
-**[[Skin Glossary - Pathology|Acanthosis]]
-**Organisms are usually present- minimum 3-5 yeasts per high-power field must be found to imply cause of disease
-*''Malassezia pachydermis'' in [[Mycotic skin infections - Pathology#Malassezia dermatitis|malassezia dermatitis]]
 ==''Rhodotorula''==